I am occassionally (once every 6 months or so) having issues with one of my fish getting what appears to be bloat (spitting food...lethargic). Only once have they gotten bad enough that I actually noticed the abdomen swelling. I usually catch it pretty early and have learned to err on the side of caution and quarantine the fish and begin treatment with clout per the directions on this site. It sometimes takes about two weeks before they will begin to slowly start eating again but if you catch it soon enough it seems to work pretty well. I have a mixed hap/peacock tank and it seems in all cases but one (taiwan reef) the affected fish have been peacocks. The tank is 125 gal and has about 30 fish in it (most are small adults) with about 7 of those being catfish. I run two rena XP3's and do weekly water changes at a minimum. I clean one of the filters about every other week. I feed dainichi color fx, NLS, hikari gold, spirulina flakes (not too often) and once or twice a week I feed frozen brine shrimp and krill. The fish are typically fed 2-3 small meals a day. All the food is gone in 15-20 seconds and none of the fish are the least bit fat. I am wondering why I am having the bloat-like issues periodically? All the water parameters seem to check out fine and aggression is not really a problem? I have been keeping cichlids for close to 20 years and the only fish I have had issues like this with has been peacocks. None of the other fish are affected by the sick fish...it is always just one and they are removed for quarantine...I have been lucky recognizing the sick fish in time but it is just frustrating having to remove one to quarantine and try to introduce it back to a tank of males.